service: ignore SIGPIPE by defaultsystemd/v41

6 files changed, 17 insertions, 5 deletions

diff --git a/src/dbus-execute.c b/src/dbus-execute.c
index c5abcf674a..1fd2b21336 100644
--- a/src/dbus-execute.c
+++ b/src/dbus-execute.c
@@ -417,5 +417,6 @@ const BusProperty bus_exec_context_properties[] = {
         { "UtmpIdentifier",           bus_property_append_string,            "s", offsetof(ExecContext, utmp_id),                true },
         { "ControlGroupModify",       bus_property_append_bool,              "b", offsetof(ExecContext, control_group_modify)         },
         { "ControlGroupPersistent",   bus_property_append_tristate_false,    "b", offsetof(ExecContext, control_group_persistent)     },
+        { "IgnoreSIGPIPE",            bus_property_append_bool,              "b", offsetof(ExecContext, ignore_sigpipe          )     },
         { NULL, }
 };
diff --git a/src/dbus-execute.h b/src/dbus-execute.h
index 0aea99e333..03cd69d126 100644
--- a/src/dbus-execute.h
+++ b/src/dbus-execute.h
@@ -95,7 +95,8 @@
         "  <property name=\"UtmpIdentifier\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"ControlGroupModify\" type=\"b\" access=\"read\"/>\n" \
         "  <property name=\"ControlGroupPersistent\" type=\"b\" access=\"read\"/>\n" \
-        "  <property name=\"PrivateNetwork\" type=\"b\" access=\"read\"/>\n"
+        "  <property name=\"PrivateNetwork\" type=\"b\" access=\"read\"/>\n" \
+        "  <property name=\"IgnoreSIGPIPE\" type=\"b\" access=\"read\"/>\n"
 
 #define BUS_EXEC_COMMAND_INTERFACE(name)                             \
         "  <property name=\"" name "\" type=\"a(sasbttuii)\" access=\"read\"/>\n"
diff --git a/src/execute.c b/src/execute.c
index 536877d68c..dab485682b 100644
--- a/src/execute.c
+++ b/src/execute.c
@@ -1038,8 +1038,11 @@ int exec_spawn(ExecCommand *command,
                 default_signals(SIGNALS_CRASH_HANDLER,
                                 SIGNALS_IGNORE, -1);
 
-                if (sigemptyset(&ss) < 0 ||
-                    sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
+                if (context->ignore_sigpipe)
+                        ignore_signals(SIGPIPE, -1);
+
+                assert_se(sigemptyset(&ss) == 0);
+                if (sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
                         err = -errno;
                         r = EXIT_SIGNAL_MASK;
                         goto fail_child;
@@ -1528,6 +1531,7 @@ void exec_context_init(ExecContext *c) {
         c->kill_signal = SIGTERM;
         c->send_sigkill = true;
         c->control_group_persistent = -1;
+        c->ignore_sigpipe = true;
 }
 
 void exec_context_done(ExecContext *c) {
@@ -1876,10 +1880,12 @@ void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) {
         fprintf(f,
                 "%sKillMode: %s\n"
                 "%sKillSignal: SIG%s\n"
-                "%sSendSIGKILL: %s\n",
+                "%sSendSIGKILL: %s\n"
+                "%sIgnoreSIGPIPE: %s\n",
                 prefix, kill_mode_to_string(c->kill_mode),
                 prefix, signal_to_string(c->kill_signal),
-                prefix, yes_no(c->send_sigkill));
+                prefix, yes_no(c->send_sigkill),
+                prefix, yes_no(c->ignore_sigpipe));
 
         if (c->utmp_id)
                 fprintf(f,
diff --git a/src/execute.h b/src/execute.h
index ed90c6e3ed..0d7e7dd65d 100644
--- a/src/execute.h
+++ b/src/execute.h
@@ -128,6 +128,8 @@ struct ExecContext {
         bool tty_vhangup;
         bool tty_vt_disallocate;
 
+        bool ignore_sigpipe;
+
         /* Since resolving these names might might involve socket
          * connections and we don't want to deadlock ourselves these
          * names are resolved on execution only and in the child
diff --git a/src/load-fragment-gperf.gperf.m4 b/src/load-fragment-gperf.gperf.m4
index 9191f90642..9708ff8283 100644
--- a/src/load-fragment-gperf.gperf.m4
+++ b/src/load-fragment-gperf.gperf.m4
@@ -85,6 +85,7 @@ $1.PAMName,                      config_parse_unit_string_printf,    0,
 $1.KillMode,                     config_parse_kill_mode,             0,                             offsetof($1, exec_context.kill_mode)
 $1.KillSignal,                   config_parse_kill_signal,           0,                             offsetof($1, exec_context.kill_signal)
 $1.SendSIGKILL,                  config_parse_bool,                  0,                             offsetof($1, exec_context.send_sigkill)
+$1.IgnoreSIGPIPE,                config_parse_bool,                  0,                             offsetof($1, exec_context.ignore_sigpipe)
 $1.UtmpIdentifier,               config_parse_unit_string_printf,    0,                             offsetof($1, exec_context.utmp_id)
 $1.ControlGroupModify,           config_parse_bool,                  0,                             offsetof($1, exec_context.control_group_modify)
 $1.ControlGroupPersistent,       config_parse_tristate,              0,                             offsetof($1, exec_context.control_group_persistent)'
diff --git a/src/service.c b/src/service.c
index a190a73b48..9ccb1b6bc1 100644
--- a/src/service.c
+++ b/src/service.c
@@ -894,6 +894,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
         s->remain_after_exit = !s->pid_file;
         s->guess_main_pid = false;
         s->restart = SERVICE_RESTART_NO;
+        s->exec_context.ignore_sigpipe = false;
 
         if (UNIT(s)->manager->sysv_console)
                 s->exec_context.std_output = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;